AS8222

Datasheet - Contents

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Revision 1.0

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7.10.3 State Transitions due to Voltage Recovery Detection ............................................................................................................. 24

7.11 Mode Transitions .............................................................................................................................................................................. 24

7.11.1 Error Pin Signalling.................................................................................................................................................................. 27

7.12 Loss of Ground................................................................................................................................................................................. 27

7.13 ERROR Flags Description................................................................................................................................................................ 27

7.13.2 Undervoltage Detected VIO Flag............................................................................................................................................. 27

7.13.3 Undervoltage Detected VCC Flag............................................................................................................................................ 27

7.13.4 Bus Error.................................................................................................................................................................................. 27

7.13.5 Bus Open Line......................................................................................................................................................................... 27

7.13.6 BP Short Circuit to VCC........................................................................................................................................................... 27

7.13.7 BP Short Circuit to GND .......................................................................................................................................................... 28

7.13.9 BM Short Circuit to GND.......................................................................................................................................................... 28

7.13.10 Short Circuit between BP and BM ......................................................................................................................................... 28

7.13.11 Over-temperature .................................................................................................................................................................. 28

7.13.12 TxEN_BGE Timeout .............................................................................................................................................................. 28

7.13.13 Error Flag............................................................................................................................................................................... 28

7.14 STATUS Flags Description ............................................................................................................................................................... 28

7.14.1 Local and Remote Wake Flag ................................................................................................................................................. 28

7.14.2 Power on Flag.......................................................................................................................................................................... 28

7.14.3 BGE Status.............................................................................................................................................................................. 28

7.15 Error and Status Flags Read Out ..................................................................................................................................................... 29

8 Bus Driver ............................................................................................................................................................................... 30

8.1 AS8222 Bus States ............................................................................................................................................................................ 30

8.2 Transceiver Timing ............................................................................................................................................................................. 30

8.3 Transmitter.......................................................................................................................................................................................... 31

8.4 Receiver ............................................................................................................................................................................................. 33

8.4.1 Bus activity and idle detection (only in NORMAL and RECEIVE ONLY mode)......................................................................... 33

8.4.2 Bus Data Detection (Only in NORMAL and RECEIVE ONLY Mode) ........................................................................................ 34

8.4.3 Receiver Test Signal.................................................................................................................................................................. 35

9 Test circuits ............................................................................................................................................................................. 36

9.1 ISO7637-2 Test Pulses - Class D....................................................................................................................................................... 36

9.2 Application Circuit............................................................................................................................................................................... 37

10 Appendix............................................................................................................................................................................... 38

10.1 FlexRay Functional Classes............................................................................................................................................................. 38

10.2 FlexRay Parameter Comparison ...................................................................................................................................................... 38

11 Package Drawings and Markings..........................................................................................................................................

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12 Ordering Information.............................................................................................................................................................

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